摘要
Admission control algorithm is a key component of a media server whichsupports Quality of Service (QoS). In this paper we present an admission control algorithm thatexploits the elastic properties of the user requirements and the changing properties of systemconditions. The characteristic of the algorithm can be expounded from these aspects: First, itprovides multiple services to satisfy the different users' requirements regarding QoS and price.Second, it uses a worth function to select from media services with different QoS characteristics inthe negotiation process. Finally, it employs a novel price policy to compute the charge for theservice, which has a great effect on restricting the greediness of the users and therefore increasethe overall user benefit. In the end of the paper, we compare the user benefit attained by ouralgorithm with that of other method.
Admission control algorithm is a key component of a media server whichsupports Quality of Service (QoS). In this paper we present an admission control algorithm thatexploits the elastic properties of the user requirements and the changing properties of systemconditions. The characteristic of the algorithm can be expounded from these aspects: First, itprovides multiple services to satisfy the different users' requirements regarding QoS and price.Second, it uses a worth function to select from media services with different QoS characteristics inthe negotiation process. Finally, it employs a novel price policy to compute the charge for theservice, which has a great effect on restricting the greediness of the users and therefore increasethe overall user benefit. In the end of the paper, we compare the user benefit attained by ouralgorithm with that of other method.
基金
This work is supported by National Natural Science Foundation of China (No.70271050) and Jiangsu Province University Natural Science Research Plan (No.02KJB520002).